The provided line chart presents modes of transportation in a metropolitan city in Europe from 1980 to 2030. On the x-axis the years for the past data points and future projections until 2030 are given, whereas on the y-axis number of commuters are given in million units.
Overall, it can be seen that railway-based transportation modes such as subway and tram are gaining popularity over years and expected to follow the same trend in the near future. Furthermore, busses are being less preferred over years and since 2000s a new mode of transportation appears and gains user base over time.
In 1980, the mostly used vehicle type was subway with 2.5 millions travellers per month and it remained the top choice among years and expected to rise to 4.5 million users in 2030. Similarly, trams also increased its usage from around 500 thousands to 2 millions of travellers.
On the other hand, it is visible that commuting by bus became less preferred and dropped to its lowest level in 2030 with around 1 million passenger. Besides, bike sharing emerged as an alternative vehicle type and according to the predictions it might rise to 0.5 million commuters per month on average.